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Method for culturing denitrification sludge for treating industrial wastewater by using river bottom sediment

A technology for denitrifying sludge and bottom sediments, applied in biological treatment devices, chemical instruments and methods, special compound water treatment, etc. and other problems, to achieve good application prospects, easy large-scale promotion and application, and simple cultivation methods.

Inactive Publication Date: 2019-08-30
BEIJING UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, there are many deficiencies in the cultivation process of denitrification sludge, such as long cultivation and domestication time, complicated cultivation process, high cost, etc., and a large amount of river bottom sediments have not been effectively utilized, and there is an urgent need for natural and environmentally friendly utilization methods

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  • Method for culturing denitrification sludge for treating industrial wastewater by using river bottom sediment
  • Method for culturing denitrification sludge for treating industrial wastewater by using river bottom sediment

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Embodiment Construction

[0023] In order to facilitate understanding of the present invention, the present invention enumerates the following examples. Those skilled in the art should understand that the examples are only used to help understand the present invention, and should not be regarded as specific limitations on the present invention.

[0024] The river bottom sediment used in the embodiment is taken from the bottom of the Xiaotaihou River in Chaoyang District, Beijing, with MLSS=850g / L. The effluent from the aeration tank of the comprehensive sewage treatment plant in the iron and steel industry used in the examples was taken from the effluent from the aeration tank from the western sewage treatment plant of Ansteel Group in Anshan City, Liaoning Province.

[0025] 1. Sediment inoculation period: Inject tap water into the 5L reactor, and add glucose and sodium nitrate as nutrient sources. The dosage of glucose is COD=500mg / L, the dosage of sodium nitrate is NO 3 - -N=100mg / L, set the carb...

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Abstract

The invention relates to a culture method for denitrification sludge for treating industrial wastewater by using river bottom sediment. According to the culture method, the river bottom sediment is used as an inoculation bacteria source, a culture mode of replenishing the river bottom sediment in a gradient manner and shortening hydraulic retention time in a gradient manner are combined is adopted, and sodium nitrate is used for providing a nitrogen source and glucose is used for providing an inorganic carbon source. The invention provides the method for culturing the denitrification sludge byusing the river bottom sediment; the culture method of the denitrification sludge is simple and environmentally friendly, and is easy for large-scale popularization and application; the obtained denitrification sludge is high in activity, the denitrifying bacteria flora is rich, the applicability is strong, and resistance to water quality shock load is realized; the method can realize effective utilization of the river bottom sediment and deep nitrogen removal treatment by denitrification of the industrial wastewater.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a method for cultivating denitrification sludge used for the treatment of industrial wastewater containing high-concentration nitrate nitrogen. Background technique [0002] Biological nitrification and denitrification have become common processes in the water treatment industry to treat industrial wastewater with high nitrogen content. At present, sewage treatment plants often use activated sludge containing highly active bacteria as a carrier for sewage treatment. After the effluent of the aeration tank of the sewage treatment plant is aerated and nitrified, it needs to enter the denitrification tank for denitrification and denitrification treatment. Using activated sludge method for denitrification treatment is currently a more popular biochemical operation. Therefore, cultivating and acclimating highly active denitrifying microbial flora is very important for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/16
CPCC02F3/34C02F2101/163C02F2203/004C02F2305/06
Inventor 李军侯连刚刘阳丁凡
Owner BEIJING UNIV OF TECH
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